ADOPTED LEVELS, GAMMAS for 69Ni
Author: C.D. Nesaraja | Citation: Nucl. Data Sheets 115, 1 (2014) | Cutoff date: 31-Jul-2013
Full ENSDF file | Adopted Levels (PDF version)
| Q(β-)=5758 keV 4 | S(n)= 4586 keV 5 | S(p)= 1534×101 keV 15 | Q(α)= -11182 keV 8 | ||
| Reference: 2012WA38 |
| References: | |||
| A | 69Co β- decay (227 MS) | B | 69Ni IT decay (0.439 μs) |
| C | 2H(68Ni,p) | ||
| E(level) (keV) | XREF | Jπ(level) | T1/2(level) | E(γ) (keV) | I(γ) | M(γ) | Final Levels | |
| 0.0 | ABC | (9/2+) | 11.4 s 3 % β- = 100 % β-n = ? | |||||
| 321 2 | AB | (1/2-) | 3.5 s 4 % β- ≈ 100 % IT < 0.01 | |||||
| 915.3 | AB | (5/2-) | 120 ps 34 | 594.3 | | [E2] | 321 | (1/2-) |
| 1517.4 | A | (5/2-) | 602.4 1196.5 | 79 9 100 11 | 915.3 321 | (5/2-) (1/2-) | ||
| 1821.0 | A | 303.6 | | 1517.4 | (5/2-) | |||
| 1959 | B | (9/2-) | 1044 1959 | | 915.3 0.0 | (5/2-) (9/2+) | ||
| 2241 | B | (13/2+) | 2241 | | 0.0 | (9/2+) | ||
| 2552 | BC | (13/2-) | 519 ps 24 | 311 593 | 39 100 | [E1] [E2] | 2241 1959 | (13/2+) (9/2-) |
| 2700 | B | (17/2-) | 0.439 µs 3 % IT = 100 | 148 | | [E2] | 2552 | (13/2-) |
E(level): From least-square fit to the Eγ’s, except for the 321 level which is from IT decay.
Jπ(level): Tentative assignments from level systematics in 1998Gr14 which are in good agreement with large scale shell model calculation using NR78 interaction (2010RaZY)
E(γ): Values quoted to the tenths of keV are from β- decay. The others are from IT decay
I(γ): Relative photon branching from each level. Data for the 1517 level are from β- decay and for the 2552 level are from IT decay.
M(γ): From ΔJπ
| E(level) (keV) | Jπ(level) | T1/2(level) | E(γ) (keV) | Multipolarity | Conversion Coefficient | Additional Data |
| 915.3 | (5/2-) | 120 ps 34 | 594.3 | [E2] | 0.000975 | B(E2)(W.u.)=3.8 11 (<a href= "http://www.nndc.bnl.gov/nsr/nsrlink.jsp?2003Ma50 ">2003Ma50</a>), α=0.000975 14, α(K)=0.000876 13, α(L)=8.67E-5 13, α(M)=1.220E-5 17, α(N)=5.15E-7 8, α(N+)=5.15E-7 |
| 2552 | (13/2-) | 519 ps 24 | 311 | [E1] | 0.001729 | B(E1)(W.u.)=7.2E-6, α=0.001729 25, α(K)=0.001554 22, α(L)=0.0001521 22, α(M)=2.14E-5 3, α(N)=9.06E-7 13, α(N+)=9.06E-7 |
| (13/2-) | 519 ps 24 | 593 | [E2] | 0.000981 | B(E2)(W.u.)=0.63 3 (<a href= "http://www.nndc.bnl.gov/nsr/nsrlink.jsp?2003Ma50 ">2003Ma50</a>), α=0.000981 14, α(K)=0.000881 13, α(L)=8.73E-5 13, α(M)=1.228E-5 18, α(N)=5.18E-7 8, α(N+)=5.18E-7 | |
| 2700 | (17/2-) | 0.439 µs 3 % IT = 100 | 148 | [E2] | 0.1285 | B(E2)(W.u.)=0.96 4, α=0.1285, α(K)=0.1145 16, α(L)=0.01224 18, α(M)=0.001706 24, α(N)=6.39E-5 9, α(N+)=6.39E-5 9 |
Additional Level Data and Comments:
| E(level) | Jπ(level) | T1/2(level) | Comments |
| E(level) | E(gamma) | Comments |
| 915.3 | 594.3 | E(γ): Doublet as confirmed by γγ coincidence data in 1998Gr14 |
2012Ga06: Summary and compilation of the discovery of the Ni isotopes
2010RaZY: Large scale shell model calculation using NR78 interaction to estimate energies of the lowest excited states in nickel isotopes
2007Gu09: High precision measurement with triple-trap mass spectrometer ISOLTRAP at ISODLE/CERN. Mass excess= -59978.6 3.7
2002Kr13: Produced from 238U(p,f) reaction at E= 30 MeV with resonant laser-ionization and mass separation at Louvain-la Neuve cyclotron facility. Production rate was 23 atoms/μC 4.
2001Fr21: 69Co produced from 30 MeV proton induced fission reaction on 238U. Extracted selectively by resonant laser ionization and mass separator (LIGIS-LISOL) facility at Leuven. Measured βγ and γγ coincidence spectra with high purity Ge detectors and plastic scintillators. Measured T1/2 from timing of β delayed γ intensity
1999Pr10,1998PrZY: 69Ni produced by fragmentation of 70 MeV/nucleon 76Ge beam on Be target using the A1200 separator at NSCL, MSU. β delay γ measured with two thin plastic scintillators and two large-volume Ge detectors. Isomer identified with T1/2 of 3.4 s 7 at E=321 keV with νp1/2-1νg9/22 configuration.
1985Bo49: 69Ni produced and identified in W(76Ge,X) reaction at 11.5 MeV/nucleon followed by mass separation at GSI facility. Measured γ, β, βγ coin, isotopic half-life using Ge and Si detectors and plastic scintillators. T1/2 from βγ coincidence data on the decay of 205γ, 680γ and 1213γ
1985Ru05: 69Ni produced by irradiation of W target with 11.4 MeV/nucleon 76Se beam followed by on-line mass separation. Measured Eγ, Iγ, T1/2, βγ coincidences using 4π plastic β and Ge detectors.
1984De33: Production of neutron rich nuclei from 70Zn(14C,15O) reaction at E(14C)=72 MeV. Measured spectra, differential cross sections and 69Ni mass excess.